US5694105A - Coil former having two winding chambers - Google Patents

Coil former having two winding chambers Download PDF

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Publication number
US5694105A
US5694105A US08/726,517 US72651796A US5694105A US 5694105 A US5694105 A US 5694105A US 72651796 A US72651796 A US 72651796A US 5694105 A US5694105 A US 5694105A
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United States
Prior art keywords
winding
coil former
bases
opening
flanges
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US08/726,517
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English (en)
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Marlene Weiner
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Individual
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Individual
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads

Definitions

  • the present invention relates to a coil former having a winding body containing an opening extending therethrough for accommodating a core. On both ends of the winding body, flanges are formed which extend in a plane transverse to the longitudinal axis of the opening. At least one flange has a connecting ledge integrally formed with the flange and having at least four soldering terminals arranged side by side in a row for receiving winding wires wound about the winding body.
  • a coil former of the above-mentioned type is known from DE 32 41 408 C2.
  • the soldering terminals are designed as soldering tags having an essentially rectangular flat cross-section wherein the width of the cross-section is considerably larger than its height.
  • the ends of the winding wires wound about the tags are connected to the tags by soldering.
  • changes in the length of the winding wire occur due to the high soldering temperature and subsequent cooling. These changes in length increase the tensile stress within the winding wire. This may impair the soldering quality and cause the winding wire to be damaged or torn off during operation under varying work temperatures.
  • winding the winding wire about the soldering tag in an automatic winding machine is laborious.
  • soldering terminals as essentially cylindrical pins embedded in bases in a plane perpendicular to the longitudinal axis.
  • the pins extend vertically from the bases.
  • the bases are spaced apart from one another and each base tapers on the side facing the associated pin.
  • Reinforcing ribs are formed on the side of the connecting ledge facing the opening.
  • the soldering terminals are designed as essentially cylindrical pins.
  • the cylindrical shape makes it possible to wind the end of a winding wire tightly about the pin without risk of tearing or breaking off the winding wire on sharp edges.
  • the cylindrical pins may be relatively sturdy and may, e.g., have a diameter of 1 mm. This means that thick winding wires can be wound tightly about the pins without bending the pins.
  • reinforcing ribs are formed on the side of the connecting ledge facing the opening, and improve the mechanical stability of the connecting ledge. Since the connecting ledge is integrally connected to the associated flange, the mechanical stability of the flange and thus the mechanical stability of the entire coil former is improved.
  • the bases of the connecting ledge are spaced by a predetermined distance from the opposite side wall of the flange, thereby creating a guiding path along which the winding wire or winding wires are guided. Furthermore, this arrangement ensures that the winding wires are insulated and separated from the core.
  • the flange supports at least one spacer extending vertically in the direction of the cylindrical pins.
  • the end of the spacer extends beyond the height of the winding wire wound about the pin or the height of the associated solder.
  • the spacer serves to establish a predefined distance relative to a printed board, so that the end of the winding wire wound about the pin and connected to it by soldering has a sufficient distance from through holes formed in the printed board to prevent faulty soldering caused by covered through holes.
  • the side wall of the flange facing the connecting ledge has recesses through which the winding wire or winding wires are guided from the winding body. These recesses provide separating openings which permit the wires to be guided from the winding body to the connecting ledge without crossing each other.
  • FIG. 1 is a perspective view of the new coil former having two winding chambers
  • FIG. 2 is a schematic view of the coil former of FIG. 1 with the end of a winding wire wound about a pin, and
  • FIG. 3 is a schematic side view of the coil former of FIG. 1.
  • FIG. 1 is a perspective view of an embodiment of coil former 10 of the invention.
  • the coil former 10 is formed in one piece from plastic material, and preferably from a glass fibre reinforced polyamide.
  • the coil former has a continuous winding body 12 with an opening 14 extending therethrough for accommodating a core (not shown).
  • Flanges 16, 18 extending in a transverse plane are formed on the ends of the winding body 12.
  • two central flanges 20 and 22 are centrally arranged on the winding body 12.
  • the central flanges extend in planes that are perpendicular to the longitudinal axis of the opening 14.
  • the flanges 16, 18, 20, 22 axially delimit two winding chambers 24, 26 adapted to receive windings (not shown).
  • Connecting ledges 28, 30 are formed on the two outer flanges 16, 18.
  • the connecting ledges 28, 30 support pins 32.
  • the pins 32 are aligned along a straight line on each connecting ledge 28, 30 and have an essentially cylindrical shape.
  • the pins 32 are embedded in bases 34. Only one of the bases is identified by the reference number 34.
  • the pins of each connecting ledge 28, 30 extend vertically in a plane perpendicular to the longitudinal axis of the opening 14.
  • Each base 34 has a square bottom surface and tapers in the direction towards the pin 32.
  • the side faces of the bases 34 are trapezoid.
  • the flanges 16, 18 On the side opposite the connecting ledges 28, 30, the flanges 16, 18 have side walls 38, 40 spaced apart from the bases 34. Because of the spacing, a guiding path for the winding wires is created between the side walls 38, 40.
  • the side walls 38, 40 further have recesses 42, 44 through which the winding wire or winding wires can be guided from the winding chambers 24 or 26 to the connecting ledges 28, 30 and the pins 32 in a predefined manner, and without crossing each other.
  • Each flange 16, 18 has two spacers 46 extending vertically in a direction parallel to the cylindrical pins 32. The ends of the spacers extend beyond the height of the winding wires wound about the pins 32 or the height of the associated soldering material.
  • each connecting ledge 28, 30 has reinforcing ribs 48 which improve its mechanical stability. Since the coil former 10 is formed of one piece, as already mentioned above, the overall mechanical stability of the coil former 10 is improved by the reinforcing ribs 48.
  • FIG. 2 shows the coil former 10 of FIG. 1 with a winding wire 50.
  • the winding wire 50 passes from the winding chamber 24 through one of the separating openings 42 in the side wall 38 and is deflected about two bases 34. One end of the winding wire 50 is then wound about the pin 32. Due to the inclined side faces 36, the wire 50 cannot become entangled even if the winding is carried out automatically. By deflecting the winding wire 50 about the two bases 34, strain relief is provided which compensates tensile stresses occurring due to temperature changes during soldering.
  • FIG. 3 is a schematic side view (not showing the central flanges 20, 22) which shows the dimensioning of the height of the spacers 46.
  • the ends 52 of the spacers 46 extend beyond the solder 54 of a pin 32 supporting a wire end.
  • the spacers 46 thus establish a predefined distance from a printed board (not shown) arranged on the side of the pins.
  • the height of each spacer 46 is such that a winding wire 50 wound about the pin 32 as well as the associated solder 54 are situated at a sufficient distance from the printed board to ensure that neither the end of the winding wire 50 nor the solder 54 obstruct the through hole on the printed board into which the pin 32 is inserted. Faulty soldering is thus prevented.
  • the pins 32 of both connecting ledges 28, 30 extend in planes that are parallel to the flanges 16, 18, and all the pins point in the same direction. It is thus possible to connect the ends of the winding wires 50 wound about the pins 32 with all the pins in a single soldering process, e.g. by dip soldering.
  • the pins 28 preferably have a pair of flattened side faces so that there results a cylindrical shape with flattened sides. Further, the cylindrical surface is provided with a fluting. The area of transition between the flat side face and the cylindrical surface creates an edge for tearing off the winding wire wound about the pin.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Insulating Of Coils (AREA)
US08/726,517 1995-11-07 1996-10-07 Coil former having two winding chambers Expired - Lifetime US5694105A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19541446.2 1995-11-07
DE19541446A DE19541446B4 (de) 1995-11-07 1995-11-07 Spulenkörper mit zwei Wickelkammern

Publications (1)

Publication Number Publication Date
US5694105A true US5694105A (en) 1997-12-02

Family

ID=7776822

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/726,517 Expired - Lifetime US5694105A (en) 1995-11-07 1996-10-07 Coil former having two winding chambers

Country Status (3)

Country Link
US (1) US5694105A (de)
EP (1) EP0773563B1 (de)
DE (2) DE19541446B4 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030011453A1 (en) * 2000-12-22 2003-01-16 Volker Nadenau Electromagnet
US6525637B1 (en) * 1999-09-29 2003-02-25 Koninklijke Philips Electronics N.V. Transformer
US20050212638A1 (en) * 2004-03-24 2005-09-29 Osram Sylvania Inc. Lead-in for electronic bobbins
US20050212639A1 (en) * 2004-03-24 2005-09-29 Osram Sylvania Inc. Strain-relieving wire lead-in
US20050219029A1 (en) * 2004-03-30 2005-10-06 Tamura Corporation Transformer
US20080188145A1 (en) * 2007-02-02 2008-08-07 Alfredo Grueso Electrical pin-type connector
US20090251266A1 (en) * 2008-04-07 2009-10-08 Delphi Technologies, Inc. Mounting device for a coil
US20210383957A1 (en) * 2018-10-22 2021-12-09 Würth Elektronik eiSos Gmbh & Co. KG Core For Inductive Element, And Inductive Element
US12009143B2 (en) * 2018-08-08 2024-06-11 Endress+Hauser Flowtec Ag Method of producing a coil device, coil device, measuring transducer with coil device, instrument having a measuring transducer

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19829505B4 (de) * 1998-07-02 2007-11-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Induktivität
DE29913484U1 (de) * 1999-08-02 2000-12-07 Tridonic Bauelemente Ges.M.B.H., Dornbirn Ringkörper zur Aufnahme von Wicklungen für Spulen oder Transformatoren
DE102005030014B3 (de) * 2005-06-17 2006-11-30 Ismet Ag Windungsseparierungselement zum Separieren von Windungen einer Spule, und zugehörige Spule, insbesondere Transformatorspule
DE202008012479U1 (de) 2008-09-19 2010-02-11 Weiner, René Spulenkörper mit einer durchgehenden Ausnehmung zur Aufnahme eines Kerns

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3496505A (en) * 1967-07-06 1970-02-17 Arthur Johannsen Transformer bobbins with means for mounting terminals thereon
JPS607114A (ja) * 1983-06-26 1985-01-14 Yusaku Shiba トランス用コイルボビン
US4503413A (en) * 1982-12-09 1985-03-05 Telefonbau Und Normalzeit Gmbh Spool for transformer in power supply device
JPS63175406A (ja) * 1987-01-14 1988-07-19 Fuji Kenkyusho:Kk コイルボビン
US5008644A (en) * 1989-08-31 1991-04-16 At&T Bell Laboratories Terminal assembly for linear magnetic component bobbin

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2208001A1 (de) * 1972-02-21 1973-09-06 Hohenloher Spulenkoerper Spulenkoerper
DE3040536C2 (de) * 1980-10-28 1984-08-09 Norbert 5275 Bergneustadt Weiner Spulenkörper
DE3241408A1 (de) * 1982-11-09 1984-05-10 Norbert 5275 Bergneustadt Weiner Spulenkoerper
DE3433700A1 (de) * 1984-09-13 1986-03-20 Siemens AG, 1000 Berlin und 8000 München Wickelkoerper fuer einen elektrischen uebertrager

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3496505A (en) * 1967-07-06 1970-02-17 Arthur Johannsen Transformer bobbins with means for mounting terminals thereon
US4503413A (en) * 1982-12-09 1985-03-05 Telefonbau Und Normalzeit Gmbh Spool for transformer in power supply device
JPS607114A (ja) * 1983-06-26 1985-01-14 Yusaku Shiba トランス用コイルボビン
JPS63175406A (ja) * 1987-01-14 1988-07-19 Fuji Kenkyusho:Kk コイルボビン
US5008644A (en) * 1989-08-31 1991-04-16 At&T Bell Laboratories Terminal assembly for linear magnetic component bobbin

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6525637B1 (en) * 1999-09-29 2003-02-25 Koninklijke Philips Electronics N.V. Transformer
US6724287B2 (en) * 2000-12-22 2004-04-20 Robert Bosch Gmbh Electromagnet
US20030011453A1 (en) * 2000-12-22 2003-01-16 Volker Nadenau Electromagnet
US7068136B2 (en) * 2004-03-24 2006-06-27 Osram Sylvania Inc. Lead-in for electronic bobbins
US20050212638A1 (en) * 2004-03-24 2005-09-29 Osram Sylvania Inc. Lead-in for electronic bobbins
US20050212639A1 (en) * 2004-03-24 2005-09-29 Osram Sylvania Inc. Strain-relieving wire lead-in
US7068137B2 (en) * 2004-03-24 2006-06-27 Osram Sylvania Inc. Strain-relieving wire lead-in
US20070035374A1 (en) * 2004-03-30 2007-02-15 Tamura Corporation Transformer
US20050219029A1 (en) * 2004-03-30 2005-10-06 Tamura Corporation Transformer
US20080188145A1 (en) * 2007-02-02 2008-08-07 Alfredo Grueso Electrical pin-type connector
US7456717B2 (en) * 2007-02-02 2008-11-25 Astec International Limited Electrical pin-type connector
US20090251266A1 (en) * 2008-04-07 2009-10-08 Delphi Technologies, Inc. Mounting device for a coil
US7834730B2 (en) * 2008-04-07 2010-11-16 Delphi Technologies, Inc. Mounting device for a coil
US12009143B2 (en) * 2018-08-08 2024-06-11 Endress+Hauser Flowtec Ag Method of producing a coil device, coil device, measuring transducer with coil device, instrument having a measuring transducer
US20210383957A1 (en) * 2018-10-22 2021-12-09 Würth Elektronik eiSos Gmbh & Co. KG Core For Inductive Element, And Inductive Element
US12033781B2 (en) * 2018-10-22 2024-07-09 Würth Elektronik eiSos Gmbh & Co. KG Core for inductive element, and inductive element

Also Published As

Publication number Publication date
DE19541446A1 (de) 1997-05-15
DE59605393D1 (de) 2000-07-13
EP0773563B1 (de) 2000-06-07
EP0773563A1 (de) 1997-05-14
DE19541446B4 (de) 2005-08-25

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